What do utm_source and utm_medium mean?

utm_source identifies where traffic came from, such as google or newsletter. utm_medium identifies the channel, such as cpc, email or paid_social.

Can I use these UTM links with GA4?

Yes. GA4 reads standard UTM parameters when a tagged link brings a visitor to a measured site. Your Analytics setup still needs to be installed and configured separately.

What happens to existing query parameters?

The builder preserves existing query parameters and adds or updates the UTM parameters using URL-safe encoding.

Does BaseToolbox store my campaign URLs?

No. URLs and campaign values are processed in the current browser and are not sent to BaseToolbox for storage or shortening.

UTM Builder - Free GA4 Campaign URL Builder

UTM Builder

Build GA4-friendly UTM campaign URLs and preserve existing query parameters.

Browser-only URL building

The URL is built in your browser. BaseToolbox does not store campaign links or form input.

Website URL

Campaign source

Campaign medium

Campaign name

Campaign term

Campaign content

Tracked URL

Build consistent UTM campaign URLs

Add GA4-friendly utm_source, utm_medium, utm_campaign, utm_term and utm_content parameters without manually editing a query string. Existing query parameters are preserved.

How to build a tracked URL

Enter the destination URL or domain you want people to visit.
Add a source, medium and campaign name, plus optional term and content labels.
Build the URL, review the encoded result, then copy it into your campaign or QR code.

Campaign data stays in this browser

The destination and UTM values are combined locally in this browser. BaseToolbox does not send, store or shorten the campaign URL.

Related URL tools

URL encoder and decoder QR code generator

UTM builder FAQ

What do utm_source and utm_medium mean?: utm_source identifies where traffic came from, such as google or newsletter. utm_medium identifies the channel, such as cpc, email or paid_social.
Can I use these UTM links with GA4?: Yes. GA4 reads standard UTM parameters when a tagged link brings a visitor to a measured site. Your Analytics setup still needs to be installed and configured separately.
What happens to existing query parameters?: The builder preserves existing query parameters and adds or updates the UTM parameters using URL-safe encoding.
Does BaseToolbox store my campaign URLs?: No. URLs and campaign values are processed in the current browser and are not sent to BaseToolbox for storage or shortening.